Making full screen games with Viewport Units and Same Page Editing Capability- Jeopardy Rocks

One of my top challenges when developing Jeopardy Rocks (Week 3 of the20/20 Challenge) was ensuring that the game displays just as well on a projector as it does on a computer or a tablet.  

We didn't want any scrolling down, misplaced podiums, or numbers that were too big.  After some research, I discovered what I think is the best approach to the issue:

CSS Viewport Units

Introduced in CSS3, viewport units are based on the size of the viewport (or visible screen) of the browser.  The two units are viewport height and viewport width. They can be used as follows: